Since Kaido's true origins were never focused upon in the story, fans always knew that bits and pieces would be revealed at some point later down the line. The Final Saga has done just that ...
One Piece’s final arc has raised the stakes to a wild degree for Luffy and the Straw Hat Pirates, but the War For Wano will go down as one of the biggest battles of the shonen series to date.
As it stands, Monkey appears to be invincible when he is in his Gear Fifth form, able to dodge some of Kaido’s biggest attacks ... Eiichiro Oda has been focused on the final arc of the shonen ...